A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Routing Area Working Group WG of the IETF.
Title : Micro-loop prevention by introducing a local
convergence delay
Authors : Stephane Litkowski
Bruno Decraene
Clarence Filsfils
Pierre Francois
Filename : draft-ietf-rtgwg-uloop-delay-07.txt
Pages : 24
Date : 2017-10-10
Abstract:
This document describes a mechanism for link-state routing protocols
to prevent local transient forwarding loops in case of link failure.
This mechanism proposes a two-step convergence by introducing a delay
between the convergence of the node adjacent to the topology change
and the network wide convergence.
As this mechanism delays the IGP convergence it may only be used for
planned maintenance or when fast reroute protects the traffic between
the link failure time and the IGP convergence.
The proposed mechanism is limited to the link down event in order to
keep the mechanism simple.
Simulations using real network topologies have been performed and
show that local loops are a significant portion (>50%) of the total
forwarding loops.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-rtgwg-uloop-delay/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-rtgwg-uloop-delay-07
https://datatracker.ietf.org/doc/html/draft-ietf-rtgwg-uloop-delay-07
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-rtgwg-uloop-delay-07
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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